Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie as duplas femininas quando o duplo misto é potten ruth scott
 ###Tabelas: CREATE TABLE past_champions_and_grand_finalists (past_champions_and_grand_finalists_id AUTO_INCREMENT PRIMARY KEY, Year INT, Champion VARCHAR, Grand Finalist VARCHAR, Champion Team Members VARCHAR, Grand Finalists VARCHAR) CREATE TABLE administered_by_independent_administrative_institutions (administered_by_independent_administrative_institutions_id AUTO_INCREMENT PRIMARY KEY, English Name VARCHAR, Japanese orthography VARCHAR, Pronouciation VARCHAR, abbreviation VARCHAR, Provider(IAI) VARCHAR, Foundation INT) CREATE TABLE past_winners (past_winners_id AUTO_INCREMENT PRIMARY KEY, Year INT, Mens singles VARCHAR, Womens singles VARCHAR, Mens doubles VARCHAR, Womens doubles VARCHAR, Mixed doubles VARCHAR) CREATE TABLE lgbt (lgbt_id AUTO_INCREMENT PRIMARY KEY, Letters VARCHAR, Organization VARCHAR, Nickname VARCHAR, Founding Date VARCHAR, Founding University VARCHAR, Type VARCHAR) CREATE TABLE grand_slam_timeline (grand_slam_timeline_id AUTO_INCREMENT PRIMARY KEY, Tournament VARCHAR, 2003 VARCHAR, 2004 VARCHAR, 2005 VARCHAR, 2006 VARCHAR, 2007 VARCHAR, 2008 VARCHAR, 2009 VARCHAR, 2010 VARCHAR, 2011 VARCHAR, 2012 VARCHAR, Win % VARCHAR)  
SELECT Womens doubles FROM past_winners WHERE Mixed doubles = Potten Ruth Scott